Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

iOS Swift 2.0 Collections and Control Flow Control Flow With Conditional Statements Working with Logical Operators

Andreas Wassberg
Andreas Wassberg
5,856 Points

Don't know how to write the code in this challenge?

So how do I finish this exercise?

logicalOperators.swift
var results: [Int] = []

for n in 1...100 {
    // Enter your code below
    if n % 100
    // End code 
}
Andreas Wassberg
Andreas Wassberg
5,856 Points

For this challenge, we'd like to know in a range of values from 1 to 100, how many numbers are both odd, and a multiple of 7.

To start us off, I've written a for loop to iterate over the desired range of values and named the local constant n. Your job is to write an if statement inside the for loop to carry out the desired checks.

If the number is indeed both an odd number and a multiple of 7, append the value to the results array provided.

Hint: To check for an odd number you can either use the remainder operator and 3, or use the not operator to check for "not even"

2 Answers

Jhoan Arango
Jhoan Arango
14,575 Points

Hello Andreas:

So, for this challenge we are going iterate through a rage of numbers. For that we need a for in loop, then it says to append those results to an array.

Most of the code has been already provided by Pasan, so all we have to do is add the conditional statement, which compares if a number can be divisible by another number and so on.

var results: [Int] = []

for n in 1...100 {
    // Enter your code below 
    if n % 2 == 1 && n % 7 == 0 { // Comparing numbers.
        results.append(n) // Appending results to array.
    }
    // End code
}

Good luck

Andreas Wassberg
Andreas Wassberg
5,856 Points

Hi,

Thanks for your reply!!

Kind regards Andreas

Hi Jhoan Arango

Can you check why snippet below can't be approve

for n in 1...100 {
    // Enter your code below
    if n % 2 != 0 && n % 7 == 0 {
        results += [n]
    }
    // End code
}